Though all the Adobe community forums are peer-to-peer (meaning they're not necessarily monitored by Adobe personnel) both myself (from Support) and Jim Lester (from Engineering) hang out here trying to be at least of a little assistance.
I wanted to let everyone know that I'll be out of the office until after 8/25. So I won't be hanging out on the forum. If you need support your best choice is to open a Technical Support webcase.
To open a Digital Editions 1.5 Technical Support case, please use the contact links at http://www.adobe.com/support/digitaleditions.
And, if at any point in the webcase you feel you're not getting satisfactory information, don't hesitate to ask to be escalated!
Senior Support Engineer, Flash/Flash Player/Digital Editions